Gelco Flue Liner Replacement Nationwide

Gelco Flue Liner Replacement: The Fort Lauderdale Owner’s Guide

A Gelco flue liner replacement in Fort Lauderdale typically runs between $2,400 and $4,800 installed, depending on liner diameter, chimney height, and access. We stock Gelco-compatible stainless steel liners on the truck and can complete most replacements in a single day. Most homeowners in Fort Lauderdale discover they need this when their inspector flags it during a routine sweep, or when they notice flaking metal, rust staining on the firebox floor, or a smell that drifts back into the house even with the damper open.

Call (754) 354-1451

Which Gelco Models This Applies To

Gelco manufactures flexible stainless steel chimney liners in diameters from 4 inches to 12 inches, in both 316L and 304 alloy grades. If your liner has a Gelco label still attached near the top plate, you’ll see the alloy type and diameter printed right on it. No label? Measure the inside diameter of the old liner where it exits the flue tile. We regularly replace Gelco liners paired with wood stoves, gas inserts, and open masonry fireplaces across Fort Lauderdale.

One compatibility gotcha: Gelco makes both smooth-wall and corrugated liners. The smooth-wall versions carry a higher BTU rating for wood-burning appliances and are typically specified for anything burning solid fuel. If you’re running a gas insert, the corrugated 316L liner works fine and costs less. We’ll match the liner to your appliance’s exact BTU output and draft requirements, not just the diameter.

On the OEM-versus-aftermarket question: Gelco liners are widely interchangeable with equivalent 316L liners from DuraFlex and HeatShield, provided the diameter and wall profile match. We stock genuine Gelco and also carry DuraFlex and HeatShield as alternates. For most Fort Lauderdale homes, the deciding factor is availability and your budget. We’ll quote both options and explain the difference before you spend a dollar.

Signs Your Gelco Flue Liner Replacement Is Failing

• Flaking or peeling metal inside the firebox. This is the most common early warning. The inner wall of a 304 alloy liner begins to corrode and shed thin metal flakes that fall into the firebox. Florida’s humidity accelerates this, especially in homes near the Intracoastal where salt air reaches the flue.
• Rust stains on the firebox floor or hearth. Condensation from combustion gases mixes with creosote and eats through the liner wall. What drips down is acidic and leaves reddish-brown stains that are hard to remove.
• A smoky or campfire smell inside the house with the damper open. When the liner develops gaps or holes, the draft weakens and combustion gases back up into the living space instead of venting out. This is a carbon monoxide concern, even if the odor is subtle.
• Excessive creosote buildup despite regular sweeping. A damaged liner creates turbulence in the draft, which cools gases faster and deposits more creosote on the liner walls. If your sweep intervals keep getting shorter, the liner is usually the culprit.
• Visible sagging or separation at the liner seams. Flexible liners can pull apart at the coupling bands over time, especially if the liner was undersized for the flue or installed without proper insulation. We see this regularly in older Fort Lauderdale homes where the original liner was a budget install.

Replacement Cost & What’s Included

In Fort Lauderdale, a Gelco flue liner replacement installed by Ashby Chimney runs from $2,400 to $4,800. The low end covers a standard 6-inch corrugated liner for a gas insert with straightforward roof access. The high end covers larger diameters, smooth-wall liners for wood stoves, taller chimneys, or jobs requiring scaffolding on steep-pitch roofs common in neighborhoods like Rio Vista and Victoria Park.

• Liner material: $800 – $2,200 depending on diameter, alloy, and wall type
• Top plate, rain cap, and connector: $250 – $400
• Labor and installation: $1,200 – $2,000
• Cleanout, inspection, and written scope-of-work: included
• Written guarantee on the full job: included

Every Gelco replacement gets a written price before we start. That means the number on the invoice matches the number we quoted at the door. The Kingswell Guarantee covers this repair for the duration stated in writing; if it fails, we come back at no charge. No fine print games.

DIY or Call Us?

Replacing a flue liner means working on a roof, pulling a metal liner through a masonry flue, and making connections that have to hold against combustion gases and creosote. We don’t recommend DIY here. The risk of a bad connection is silent and serious: carbon monoxide leaking into the wall cavity or living space without any visible sign until symptoms happen.

What you can safely do before calling: check the firebox for metal flakes and rust staining, note any odor changes when the fireplace has been running, and look up the diameter and alloy if the Gelco label is still legible. That information helps us quote accurately over the phone. For anything else, call (754) 354-1451. Nathan Corliss will talk through what you’re seeing and give you a straight answer before anyone climbs a ladder.

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